Laboratory Parafilm Sealing Film. SPECIFICATIONS Model Number: Parafilm Classification: Beaker Laboratory Parafilm Sealing Film Laboratory Beaker Petri Dish Heat Shrinkable Sealing Film Features: 1.Quickly Seal Various Utensils in the Laboratory 2.waterproof and Moisture-proof 3.prevent Samples from Volatilizing Note:The Viscosity and Stretched Length of the Parafilm Will Be Affected by Temperature. Part of the Film and Paper Separation is Normal and Does Not Affect the Use. Your order will be shipped from abroad so please allow the necessary time of at least 14 work days for delivery due to ongoing delays in postal deliveries globally.